Object definitions for top quark analyses at the particle level
/ CMS Collaboration
/CMS Collaboration
The definition of the top quark at the particle level (pseudo-top) is discussed as a fundamental aspect of performing current and future measurements of differential production cross sections in both $\mathrm{t}\overline{\mathrm{t}}$ and single top quark production.
Starting from initial studies performed in the context of the LHCtopWG, an optimization of the definition of pseudo-tops is proposed in order to maximize the correlation of the reconstructed quantities with the parton-level definition.
The implementations and their optimization are performed using RIVET as a common framework to avoid the introduction of a dependence on a specific Monte Carlo event generator..CMS-NOTE-2017-004; CERN-CMS-NOTE-2017-004.-
Geneva : CERN, 2017 - 26 p. Fulltext:PDF;

Simplified likelihood for the re-interpretation of public CMS results
/ The CMS Collaboration
/CMS Collaboration
In this note, a procedure for the construction of simplified likelihoods for the re-interpretation of the results of CMS searches for new physics is presented. The procedure relies on the use of a reduced set of information on the background models used in these searches which can readily be provided by the CMS collaboration. [...] CMS-NOTE-2017-001; CERN-CMS-NOTE-2017-001.-
Geneva : CERN, 2017 - 26 p. Fulltext:PDF;

Upgrades for the Precision Proton Spectrometer at the LHC: Fast Timing and Tracking Detectors
/ Gallinaro, Michele (LIP, Lisbon)
/CMS and TOTEM Collaborations
The CMS-TOTEM Precision Proton Spectrometer (CT-PPS) is an approved project to add tracking and timing information at approximately $\pm$210~m from the interaction point around the CMS detector. It is designed to operate at high luminosity with up to 50 interactions per 25~ns bunch crossing to perform measurements of e.g. [...] CMS-NOTE-2016-002; CERN-CMS-NOTE-2016-002.-
Geneva : CERN, 2016 - 5 p. Fulltext:PDF;